tb_bool_t tb_ifaddrs_ipaddr(tb_ifaddrs_ref_t ifaddrs, tb_char_t const* name, tb_bool_t reload, tb_size_t family, tb_ipaddr_ref_t ipaddr)
{
// check
tb_assert_and_check_return_val(ifaddrs && ipaddr, tb_false);
// clear it first
tb_ipaddr_clear(ipaddr);
// the iterator
tb_iterator_ref_t iterator = tb_ifaddrs_itor(ifaddrs, reload);
tb_assert_and_check_return_val(iterator, tb_false);
// reload it if the cached interfaces is empty
if (!reload && !tb_iterator_size(iterator)) iterator = tb_ifaddrs_itor(ifaddrs, tb_true);
// the ipaddr flags
tb_uint32_t ipflags = 0;
if (family == TB_IPADDR_FAMILY_IPV4) ipflags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4;
else if (family == TB_IPADDR_FAMILY_IPV6) ipflags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6;
// done
tb_bool_t ok = tb_false;
tb_for_all_if (tb_ifaddrs_interface_ref_t, interface, iterator, interface)
{
// is this?
if ( (name || !(interface->flags & TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK))
&& (interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR)
&& (!name || (interface->name && !tb_strcmp(interface->name, name))))
{
// ipv4?
if ( interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4
&& (!family || family == TB_IPADDR_FAMILY_IPV4))
{
// save ipaddr4
tb_ipaddr_ipv4_set(ipaddr, &interface->ipaddr4);
// ok
ok = tb_true;
break;
}
// ipv6?
else if ( interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6
&& (!family || family == TB_IPADDR_FAMILY_IPV6))
{
// save ipaddr6
tb_ipaddr_ipv6_set(ipaddr, &interface->ipaddr6);
// ok
ok = tb_true;
break;
}
}
}
// ok?
return ok;
}
static tb_size_t tb_ifaddrs_netlink_ipaddr_save(tb_ipaddr_ref_t ipaddr, tb_size_t family, tb_size_t scope_id, tb_cpointer_t saddr)
{
// check
tb_assert_and_check_return_val(ipaddr && saddr, 0);
// clear address
tb_ipaddr_clear(ipaddr);
// done
tb_size_t size = 0;
switch (family)
{
case AF_INET:
{
// the ipv4 ipaddr
struct in_addr* addr4 = (struct in_addr*)saddr;
// save family
tb_ipaddr_family_set(ipaddr, TB_IPADDR_FAMILY_IPV4);
// make ipv4
tb_ipv4_t ipv4;
ipv4.u32 = (tb_uint32_t)addr4->s_addr;
// save ipv4
tb_ipaddr_ipv4_set(ipaddr, &ipv4);
// save size
size = sizeof(struct in_addr);
}
break;
case AF_INET6:
{
// the ipv6 ipaddr
struct in6_addr* addr6 = (struct in6_addr*)saddr;
// check
tb_assert_static(sizeof(ipaddr->u.ipv6.addr.u8) == sizeof(addr6->s6_addr));
tb_assert_static(tb_arrayn(ipaddr->u.ipv6.addr.u8) == tb_arrayn(addr6->s6_addr));
// save family
tb_ipaddr_family_set(ipaddr, TB_IPADDR_FAMILY_IPV6);
// make ipv6
tb_ipv6_t ipv6;
tb_memcpy(ipv6.addr.u8, addr6->s6_addr, sizeof(ipv6.addr.u8));
// save scope id
ipv6.scope_id = 0;
if (IN6_IS_ADDR_LINKLOCAL(addr6) || IN6_IS_ADDR_MC_LINKLOCAL(addr6))
ipv6.scope_id = (tb_uint32_t)scope_id;
// save ipv6
tb_ipaddr_ipv6_set(ipaddr, &ipv6);
// save size
size = sizeof(struct in6_addr);
}
break;
default:
tb_assert(0);
break;
}
// ok?
return size;
}
